Home / 3,128.56-4,665.48-2,956.08

Finding the Fourth Proportional to 3,128.56, 4,665.48 and 2,956.08

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Solution

The fourth proportional to 3,128.56, 4,665.48 and 2,956.08 is: 4,408.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.56 : 4,665.48 = 2,956.08 : x
  2. Step 2: Convert to fraction form
    3,128.56/4,665.48 = 2,956.08/x
  3. Step 3: Cross multiply
    3,128.56x = 4,665.48 × 2,956.08
  4. Step 4: Simplify right side
    3,128.56x = 13,791,532.12
  5. Step 5: Solve for x
    x = 13,791,532.12/3,128.56
  6. Step 6: Final answer
    x = 4,408.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.